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Welcome to AX84® the base camp for tube (valve) electronics hobbyists.

AX84 exists to provide:

1) A great environment to learn about music-related electronics in general. AX84 is a place where those with experience are interested in helping diligent beginners who are willing to do their homework.

2) A place where those with more experience can field their ideas to peers and get useful feedback.

3) An environment that respects the past, but is not enslaved by it. INNOVATION IS GOOD (and it didn't die in the 1950s.) There are new things under the sun every day. Move the ball forward!

Our HUGE discussion area is under 'Discussion Forum' to your left.

We are hard at work improving the site- check back often!

Recent Forum Threads
"hickok 632c"
Posted By captlumpy on 05/28/2016
Evenin...Hickok 632c,$200.00 yes-no?..said it needs a filament resting bulb can't find anything on line about this unit,and tubes need to be tested,not sure if it will do a 300B......

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"The Method - Your steps to a build."
Posted By mcneb on 05/28/2016
Interested in who ever would want to sit and pass on their method or the steps they take to a new build. Do you start with a definite project in mind, find a schematic, find the parts, Then sit down t...

Discuss this entry
"Screen voltage higher than plate voltage! "
Posted By Alva Goldbook on 05/28/2016
I always have so many projects going on at once that I sometimes don't get the chance to break out the voltmeter before starting something new. A while back I build a Hi Octane type build, with a few ...

Discuss this entry
"Anyone ever try a "multiband distortion" build?"
Posted By Darren Porter on 05/27/2016
I experimented a little bit with multiband distortion in my DAW today using Overloud's TH3 being fed by multiband compressors and wow was I amazed at the results. I got the idea to try it from a Sweet...

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"Pentode Microphonics"
Posted By Denny Allen on 05/27/2016
There has been some discussion on this forum about pentode pre amps, but I would like to ask a question about a single type of pentode. Are frame grid pentodes less microphonic than more convention...

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Updates: Sat, May 28th, 2016 @ 19:33:41
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Site News

2014-10-21: Be sure to check out our discussion forum using the link on the left..

2014-10-20: The Treasure Fleet is on the way to Rio De La Hacha with a fortune in gold!

We're looking for media clips of recent builds... please stop by the forum and respond to the thread.

2008-10-4: Archived Projects section is functional again.

2008-9-18: RSS Feeds for the forum have been up for a while, but not advertised...
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2008-6-26: Want to participate in our discussion forums? You are welcome to read and lurk as you like. If you think you'd like to post with regularity, please sign up for an account.

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